468 



DENDKOBIUM 



DENDROBIUM 



A. Inflorescence racemose (fl. usually solitary in Jen- 

 kins ii). 



B. Racemes densely flowered. 

 c. Petals pinkish or purplish. 



. i. secundum, Wall. Pseudobulbs terete, nearly 2 ft. 

 long: Ivs. ovate-oblong: fls. all on one side of peduncle, 

 crowded ; petals smaller than sepals, rose-mauve , IP 

 bellum paler, with an apical blotch of orange. Sumatra. 



2. cumulatum, Lindl. Pseudobulbs tufted, slender, 

 erect, about 18 in. long: Ivs. oblong: fls. 1 in. across, 

 purplish, suffused with white; inflorescence globose. 

 Burma. 



cc. Petals white. 



3. Dearei, Reichb. f. Fig. 690. Pseudobulbs tall: Ivs. 

 about 2 in. long, oval-oblong : fls. about 2 in. across, 

 white; sepals lanceolate; petals nearly orbicular ; label- 

 lum oblong, with a pale, yellowish green blotch in the 

 throat. Philippine Isls. Gn. 54, p. 237. G.C. III. 24:193. 



4. leucolophdtum, Reichb. f . Pseudobulbs stout, erect: 

 racemes many-fld.: fls. white, lateral lobes of labellum 

 greenish; midlobe narrowly oblong. Malay archipelago. 



5. Palpebrae, Lindl. Pseudobulbs clavate, 4-angled: 

 Ivs. oblong-lanceolate : raceme loosely lid. : fls. white, 

 with a yellowish disk near the base of the labellum. 

 Burma. 



6. crumenatum, Swartz. Pseudobulbs erect: Ivs. ovate- 

 oblong: raceme terminal, many-fld.: sepals ami petals 

 ovate; labellum white. Malay archipelago. 



7. thyrsifldrum, Reichb. f. Pseudobulbs terete, 

 jointed: Ivs. oblong: racemes pendulous, ample: sepals 

 and petals white ; labellum yellow, downy-pubescent. 

 Burma. B.M. 5780. I. H. 22:207. Gn. 50, p. 28. A.F. 

 :3:155. F.E. 9:329. J.H. III. 31:229. G.C. II. 15:463.- 

 JVIuch like the next, and by some united with it. 



ccc. Petals yellow. 



8. densiflonim, Wall. Pseudobulbs jointed, about 15 

 in. high: Ivs. oblong : racemes pendulous, ample: fls. 

 l%-2 in. across ; sepals and petals yellow ; labellum 

 orange-yellow, downy-pubescent. Nepal. B.M. 3418. 

 G.C. 11. 17:737; III. 14:123 and 24:185. 



Var. Schrdederi, Hort. (var. album, Hort.), has whitish 

 sepals and petals. A.G. 20:5. 



9. Griff ithianum, Lindl. Pseudobulbs clavate : Ivs. 

 lanceolate-oblong : fls. in drooping, flexuose racemes ; 

 petals ciliate, yellow. Burma. 



10. Farmerii, Paxt. Pseudobulbs round, attenuate at 

 base, thickening above : Ivs. oblong : racemes ample, 

 pendulous: fls. 2 in. across, tinged with pink; throat of 

 labellum orange-yellow ; sepals oblong ; petals oval. 

 Khasia Hills. B.M. 4659. Var. albiflorum, Hort. (var. 

 album of catalogues), has white tts., the labellum 

 marked with yellow. F.S. 23:2461. Var. aureo-flavum, 

 Hort. (aurea of catalogues 1). Fls. golden yellow; disk 

 of labellum deeper yellow. 



11. sulcatum, Lindl. Pseudobulbs clavate, com- 

 pressed: Ivs. ovate-oblong: racemes 10 or more fld. : fls. 

 yellow, crowded. Khasia Hills. B.M. 6962. 



12. bicameratum, Lindl. (D. breviflbrum of cata- 

 logues). Pseudobulbs fusiform or clavate, about 18 in. 

 long: Ivs. elliptic, oblong: fls. yellow, marked with red, 

 clustered on a short rachis, forming a capitate raceme. 

 Sikkim. 



13. erythroxanthum, Reichb. f . Fls. in dense racemes, 

 yellowish striped with crimson-purple. Philippine Isls. 



BB. Racemes loosely flowered, 

 c. Pseudobulbs one-leaved. 



14. aggregatum, Roxb. Lvs. oblong, coriaceous, at the 

 summits of ovate pseudobulbs : fls. yellow, numerous, in 

 lateral drooping racemes ; sepals ovate; petals broadly 

 ovate; labellum broader than long, with orange throat; 

 disk pubescent. Burma. B.M. 3643. Var. majus, 

 Hort., is a larger-fld. form. 



15. Jenkinsii, Wall. Pseudobulbs short, compressed: 

 Ivs. oblong, coriaceous: fls. orange-yellow, solitary; se- 

 pals oval; petals broadly ovate, ^ssam. B.R. 25:37. 

 Very like D. aggregatum. 



cc. Pseudobulbs leafy at summit. 



D. flowers yellow. 

 E. Labellum pectinately fringed. 



16. Brymerianum, Reichb. f. Pseudobulbs jointed, 

 slender, about 2% ft. high, sometimes much shorter: 

 Ivs. several, lanceolate: fls. fleshy, golden yellow; upper 

 sepal oblong; petals and lateral sepals very similar; la- 

 bellum reflexed at apex, disk downy; margin provided 

 with a conspicuously long and pectinate fringe. Burma. 

 B.M. 6383. A.F.6:609. G.C. II. 11: 475; 16: 689. 



EE. Labellum not pectinately fringed. 



17. clirysotdxiim, Lindl. Pseudobulbs clavate : Ivs. 

 several, 4 in. long, coriaceous: racemes arching, many- 

 fld. : petals and sepals about equal, golden yellow ; la- 

 bellum of similar color, deeper in the throat. Burma. 

 B.M. 5053. G.F. 5:533. Gn. 48, p. 239.- Var. suavissi- 

 mum, Hort. Pseudobulbs stout : fls. delightfully fra- 

 grant; labellum with blotch deeper-colored than in the 

 type. Burma, 1847. 



DD. Flowers greenish. 



18. macrophyllum, Rich. (D. Veitchianum, Lindl.). 

 Pseudobulbs clavate, compressed: Ivs. oblong: racemes 

 many-fld.: fls. large; sepals greenish, hairy behind; 

 petals whitish ; lateral lobes of labellum greenish, 

 shaded with purple; midlobe greenish, with purple- 

 dotted lines. I. H. 35:57. Sold as D. Veitchianum , not 

 D. macrophyllum of gardens (see D. superbum). Java. 

 Dayanum, Hort., is said to be a better form than the 

 type. 



ccc. Pseudobulbs more or less leafy to base. 

 r>. Flowers white. 



19. Fytchiamun, Batem. (D. barbdtulum, Hort.). 

 Pseudobulbs slender: Ivs. oblong -lanceolate, acute: 

 racemes 10-15-fld. : fls. white; lateral lobes of the label- 

 lum tinted with purple. Burma. B.M. 5444. 



20. Macfarlanei, Reichb. f . Fls. several inches across, 

 white; labellum marked with purple, 3-lobed; sepals 

 lanceolate; petals narrowly ovate-lanceolate, acuminate. 

 New Guinea. 



